Apparatus and method for processing video signal

Abstract

According to one embodiment, an input analog video signal is digitized, and an OSD signal to which a second scaling process is performed is added to the digital video signal to which a first scaling process is performed. At this point, scaling data corresponding to the number of pixels of a panel in which the OSD signal is displayed is supplied in order to perform the second scaling process.

1 . A video signal processing apparatus comprising: 
 a processing unit configured to perform a decoding process to an inputted digital video signal to add a digital OSD signal, the digital OSD signal being set for display on a panel having the particular number of pixels;    a conversion unit configured to digitize an inputted analog video signal;    a scaling unit configured to selectively perform a first scaling process to the digital video signals outputted from the processing unit and the conversion unit while performing a second scaling process to the OSD signal based on externally inputted scaling data, the scaling unit adding the OSD signal to which the second scaling process is performed to the digital video signal to which the first scaling process is performed outputted from the conversion unit; and    a scaling data supply unit configured to supply the scaling data to the scaling unit in order to perform the second scaling process, the scaling data corresponding to the number of pixels of the panel in which the OSD signal is displayed.    
   
   
       2 . A video signal processing apparatus according to  claim 1 , wherein the scaling data supply unit comprises: 
 a storage unit configured to store the scaling data for displaying the OSD signal on the panels having various numbers of pixels; and    a control unit configured to take out the scaling data from the storage unit to supply the scaling data for the second scaling process, the scaling data corresponding to the number of pixels of the panel in which the OSD signal is displayed.    
   
   
       3 . A video signal processing apparatus according to  claim 1 , wherein the processing apparatus comprises: 
 a decoding processing unit configured to perform the decoding process to the inputted digital video signal;    a generation unit configured to generate the OSD signal; and    a first addition unit configured to add the OSD signal, generated by the generation unit, to the digital video signal to which the decoding process is performed by the decoding processing unit.    
   
   
       4 . A video signal processing apparatus according to  claim 1 , wherein the scaling unit comprises: 
 a first scaling process unit configured to selectively perform the first scaling process to the digital video signals outputted from the processing unit and the conversion unit;    a second scaling process unit configured to perform the second scaling process to the OSD signal based on the inputted scaling data; and    a second addition unit configured to add the OSD signal, outputted from the second scaling process unit, to the digital video signal outputted from the first scaling process unit, the first scaling process being performed to the digital video signal outputted from the conversion unit.    
   
   
       5 . A video signal processing method comprising: 
 a first step of performing a decoding process to an inputted digital video signal when the digital video signal is inputted, adding a digital OSD signal set for display on a panel having the particular number of pixels to the digital video signal, and performing a first scaling process and outputting the digital video signal;    a second step of digitizing an inputted analog video signal to perform the first scaling process when the analog video signal is inputted, and adding the OSD signal to which a second scaling process is performed based on externally inputted scaling data; and    a third step of supplying the scaling data for the second scaling process, the scaling data corresponding to the number of pixels of the panel in which the OSD signal is displayed.    
   
   
       6 . A video signal processing method according to  claim 5 , wherein the third step comprises: 
 a step of storing the scaling data in a storage unit, the scaling data being used to display the OSD signal on the panels having various numbers of pixels; and    a step of taking out the scaling data from the storage unit to supply the scaling data for the second scaling process, the scaling data corresponding to the number of pixels of the panel in which the OSD signal is displayed.    
   
   
       7 . A video signal processing method according to  claim 5 , wherein the first step comprises: 
 a step of performing the decoding process to the inputted digital video signal;    a step of generating the OSD signal;    a step of adding the generated OSD signal to the digital video signal to which the decoding process is performed; and    a step of performing the first scaling process to the digital video signal to which the OSD signal is added.    
   
   
       8 . A video signal processing method according to  claim 5 , wherein the second step comprises: 
 a step of digitizing the inputted analog video signal;    a step of performing the first scaling process to the digitized video signal;    a step of performing the second scaling process to the OSD signal based on the inputted scaling data; and    a step of adding the OSD signal to the digital video signal, the second scaling process being performed to the OSD signal, the first scaling process being performed to the digital video signal.    
   
   
       9 . A broadcasting receiver comprising: 
 a receiving unit configured to receive a digital or analog broadcasting signal;    a generation unit configured to generate a digital or analog video signal from the digital or analog broadcasting signal received by the receiving unit;    a processing unit configured to perform a decoding process to the digital video signal generated by the generation unit to add a digital OSD signal to the digital video signal, the digital OSD signal being set for display on a panel having the particular number of pixels;    a conversion unit configured to digitize an inputted analog video signal;    a scaling unit configured to selectively perform a first scaling process to the digital video signals outputted from the processing unit and the conversion unit while performing a second scaling process to the OSD signal based on externally inputted scaling data, the scaling unit adding the OSD signal to which the second scaling process is performed to the digital video signal to which the first scaling process is performed outputted from the conversion unit; and    a scaling data supply unit configured to supply the scaling data to the scaling unit in order to perform the second scaling process, the scaling data corresponding to the number of pixels of the panel in which the OSD signal is displayed.